No, it wouldn't. Although you could use a very fine dialysis membrane to allow water to flow in and out of a bag containing surfactant, surfactants only cause changes in properties (like surface tension) when they are dispersed at the interface-- the water tension inside the bag would change, but since the surfactant is trapped inside, the water outside the bag would behave normally. Only if surfactant molecules were free to mingle at the water/air interface would a change in surface tension be seen.